To quote from Engadget (linked above): "Sony proudly showed off its PlayStation 4 hardware for the first time at E3, and now we're getting a peek at what developers are working with this generation thanks to the FCC.

The DUH-D1000AA prototype Development Kit for PS4 is listed in these documents, tested for its Bluetooth and 802.11 b/g/n WiFi radios. As one would expect, the diagrams show it eschews the sleek design of the consumer model for extra cooling, a shape made for rack mounts plus extra indicator lights and ports.

Also of note is a "max clock speed" listing of 2.75GHz, and although we don't know how fast the game system will run by default, it's interesting to hear what that 8-core AMD Jaguar silicon may be capable of while maintaining a temperature between 5 and 35 degrees celsius.

Hit the link above to check out the documents for yourself, after seeing this and the system's controller become a part of the FCC's database all we're left waiting for is Mark...